ASTM_D_6440_-_10_2018.pdf

Designation:D644010(Reapproved 2018)Standard Terminology Relating toHydrocarbon Resins1This standard is issued under the fixed designation D6440;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 The hydrocarbon resin industry continues to evolvefrom a source of replacement products for naturally-derivedmaterials to industrial materials that have no naturally-derivedcounterparts.Along with this changing character of theindustry,various manufacturing participants have introducedterms that have led to confusion among both manufacturers andconsumers.This terminology standard is intended to alleviatethat confusion and promote standard usage of terms in thehydrocarbon resin industry.1.2 Resins derived principally from natural terpene fractionsare under the jurisdiction of D01.34.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Terminology2.1 Definitions:C5aliphatic resin,na resin produced by the cationicpolymerization of a low-boiling aliphatic steam-crackerfraction.DISCUSSIONThe principal monomers are typically cis-and trans-piperylene(1,3pentadiene).C9aromatic resin,na resin produced by the cationicpolymerization of heavy aromatic steam-cracker or coal-tarfractions.DISCUSSIONThe C9designation is broad and may include styrene,indene,methylstyrenes,and methylindenes.Depending on the sourceof the C9fraction,it may also include coumarone and dicyclopentadi-ene.cloud point,nthe temperature at which a defined liquidmixture,under controlled cooling,produces perceptible hazeor cloudiness due to the formation of fine particles of anincompatible material.dicyclopentadiene resin,na resin produced by the thermalpolymerization of a concentrated dicyclopentadiene stream.hydrocarbon resin,nin the context of such applications asadhesives,inks,coatings,flooring and roofing formulations,and rubber processing aids,a thermoplastic,low-molecular-weight,amorphous polymer that is either mined,or made bypolymerization primarily from one or more of the following:certain steam-cracked petroleum fractions,coal-tar fractions,terpene fractions,and streams rich in unsaturated monomersthat typically have five or more carbon atoms.DISCUSSIONTypical hydrocarbon resins are brittle solids at roomtemperature,chemically similar semi-solid and liquid materials areincluded by association.This term also covers derivatives of hydrocar-bon resins.hydrogenated resin,na resin that has been subjected tosome degree of reaction with hydrogen to decrease the levelof residual unsaturation.natural resin,na resin of vegetable or animal origin.DISCUSSIONThis term includes rosins,wood extracts or papermanufacturing by-products,fossil resins,mined resin,secretion prod-ucts from insects,and their main derivatives.In the context ofhydrocarbon resins,this refers to mined bituminous resins.polyterpene resin,na resin produced by the polymerizationof terpene fractions or mixtures of terpenes obtained fromnaval stores,or paper pulp production,or citrus juiceproduction,or combinations thereof.DISCUSSIONTerpene fractions can be derived from gum turpentine,wood turpentine,or sulfate turpentine;citrus juice production yields ad-limonene fraction as an extract of the peel.pure monomer resin,na resin produced by the polymeriza-tion of essentially pure compounds such as styrene,one ofthe methylstyrenes,or controlled mixtures of pure mono-mers.re-mass,vto form during storage,massive blocks of resinsfrom particulate forms,such as flakes,pastilles,or powder.DISCUSSIONRe-massing can occur with all resins but is influencedby storage temperature,and pressure,due to stacking;the lowersoftening point resins re-mass at lower temperatures.Particle sizedistribution can also have a significant effect.reinforcing resin,na resin that associates with the aromaticblocks of block co-polymers and raises the upper servicetemperature of an adhesive blend.1This terminology is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.16 on Terminology.Current edition approved Sept.1,2018.Published September 2018.Originallyapproved in 1999.Last previous edition approved in 2010 as D6440 10.DOI:10.1520/D6440-10R18.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelop